Home / 91,440-128,088

Finding the Third Proportional to 91,440 and 128,088

Calculator

Solution

The third proportional to 91,440 and 128,088 is: 179,424.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,440 : 128,088 = 128,088 : x
  2. Step 2: Convert to fraction form
    91,440/128,088 = 128,088/x
  3. Step 3: Cross multiply
    91,440x = 128,088 × 128,088
  4. Step 4: Simplify right side
    91,440x = 16,406,535,744
  5. Step 5: Solve for x
    x = 16,406,535,744/91,440
  6. Step 6: Final answer
    x = 179,424.06

Related Problems

Find third proportional to 45,720 and 64,044
Half scale
Find third proportional to 182,880 and 256,176
Double scale
Find third proportional to 91,442 and 128,091
Similar ratio
Find third proportional to 137,160 and 192,132
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.